KYMCO Downtown 300i ABS Service Manual page 246

20
.
EVAPORATIVE EMISSION CONTROL SYSTEM
PURGE CONTROL VALVE FLOW
INSPECTION
1. Connect a vacuum pump to the purge
control valve vacuum tube and apply
vacuum pressure of 45mm/Hg.
2. Connect a pressure pump to the tube that
goes to the charcoal canister and apply
pressure. The flow must be over 9.4 liters
per minute and replace the purge control
valve with a new one if the specified flow
is not reached.
＊
To prevent damage to the purge control
valve, do not use high air pressure
sources. Use a hand operated pressure
pump only.
INSTALLATION
1. Install the purge control valve in the
reverse order of removal.
2. Route and reconnect the purge control
valve tubes properly and securely.
＊
Be careful not to bend, twist or kink the
tubes during installation.
20-5
Downtown 300i ABS
Pressure Pump
Vacuum Pump